External monitor does not work with Intel 915
Bug #38729 reported by
Tero Karvinen
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Ubuntu) |
Invalid
|
Medium
|
Unassigned |
Bug Description
External monitor does not work on X on Intel 915.
I am using Intel 915 display adapter on Acer Travelmate 3004WTMi, external display connected to VGA port. Testing has been done with Dapper Flight.
External monitor (flatpanel) either displays "Cannot display this video mode" or (in the best case) clips of bottom and right part of screen. The clipping occurs both in X and in text mode.
Using CRT or video projector, picture is much more garbled.
External display does NOT work
- with 915resolution, without 915resolution
- when monitor is plugged in when computer is running, when monitor is connected when computer boots
- by pressing Fn-F5 (builtin, external, clone)
Changed in xserver-xorg-video-i810: | |
status: | New → Incomplete |
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Filed this as it's own bug as requested by Paul in a similar bug #36550.
'lshw' shows internal monitor (display 0, 12,1" 1280x800 TFT) configured, but (probably) external monitor unclaimed (VGA connector, display 1).
display:0
description: VGA compatible controller
physical id: 2
bus info: pci@00:02.0
display:1 UNCLAIMED
physical id: 2.1
bus info: pci@00:02.1
xorg.conf only seems to have definition for PCI:0:2:0:
Section "Device"
Identifier "Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller"
Driver "i810"
BusID "PCI:0:2:0"
EndSection
My kernel parameters (from menu.lst) are vmlinuz- 2.6.15- 19-386 root=/dev/hda3 ro noapic nolapic pci=noacpi quiet splash www.iki. fi/karvinen/ acer_travelmate _3004wtmi_ with_linux. html
/boot/
More about my config:
http://
I have not yet been able to come up with any bypass for this bug.